| 1 | /* Build symbol tables in GDB's internal format. |
| 2 | Copyright (C) 1986-1993, 1995-2000, 2002-2003, 2007-2012 Free |
| 3 | Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of GDB. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
| 19 | |
| 20 | #if !defined (BUILDSYM_H) |
| 21 | #define BUILDSYM_H 1 |
| 22 | |
| 23 | struct objfile; |
| 24 | struct symbol; |
| 25 | struct addrmap; |
| 26 | |
| 27 | /* This module provides definitions used for creating and adding to |
| 28 | the symbol table. These routines are called from various symbol- |
| 29 | file-reading routines. |
| 30 | |
| 31 | They originated in dbxread.c of gdb-4.2, and were split out to |
| 32 | make xcoffread.c more maintainable by sharing code. |
| 33 | |
| 34 | Variables declared in this file can be defined by #define-ing the |
| 35 | name EXTERN to null. It is used to declare variables that are |
| 36 | normally extern, but which get defined in a single module using |
| 37 | this technique. */ |
| 38 | |
| 39 | struct block; |
| 40 | |
| 41 | #ifndef EXTERN |
| 42 | #define EXTERN extern |
| 43 | #endif |
| 44 | |
| 45 | #define HASHSIZE 127 /* Size of things hashed via |
| 46 | hashname(). */ |
| 47 | |
| 48 | /* Name of source file whose symbol data we are now processing. This |
| 49 | comes from a symbol of type N_SO for stabs. For Dwarf it comes |
| 50 | from the DW_AT_name attribute of a DW_TAG_compile_unit DIE. */ |
| 51 | |
| 52 | EXTERN char *last_source_file; |
| 53 | |
| 54 | /* Core address of start of text of current source file. This too |
| 55 | comes from the N_SO symbol. For Dwarf it typically comes from the |
| 56 | DW_AT_low_pc attribute of a DW_TAG_compile_unit DIE. */ |
| 57 | |
| 58 | EXTERN CORE_ADDR last_source_start_addr; |
| 59 | |
| 60 | /* The list of sub-source-files within the current individual |
| 61 | compilation. Each file gets its own symtab with its own linetable |
| 62 | and associated info, but they all share one blockvector. */ |
| 63 | |
| 64 | struct subfile |
| 65 | { |
| 66 | struct subfile *next; |
| 67 | char *name; |
| 68 | char *dirname; |
| 69 | struct linetable *line_vector; |
| 70 | int line_vector_length; |
| 71 | enum language language; |
| 72 | const char *producer; |
| 73 | const char *debugformat; |
| 74 | struct symtab *symtab; |
| 75 | }; |
| 76 | |
| 77 | EXTERN struct subfile *current_subfile; |
| 78 | |
| 79 | /* Global variable which, when set, indicates that we are processing a |
| 80 | .o file compiled with gcc */ |
| 81 | |
| 82 | EXTERN unsigned char processing_gcc_compilation; |
| 83 | |
| 84 | /* When set, we are processing a .o file compiled by sun acc. This is |
| 85 | misnamed; it refers to all stabs-in-elf implementations which use |
| 86 | N_UNDF the way Sun does, including Solaris gcc. Hopefully all |
| 87 | stabs-in-elf implementations ever invented will choose to be |
| 88 | compatible. */ |
| 89 | |
| 90 | EXTERN unsigned char processing_acc_compilation; |
| 91 | |
| 92 | /* Count symbols as they are processed, for error messages. */ |
| 93 | |
| 94 | EXTERN unsigned int symnum; |
| 95 | |
| 96 | /* Record the symbols defined for each context in a list. We don't |
| 97 | create a struct block for the context until we know how long to |
| 98 | make it. */ |
| 99 | |
| 100 | #define PENDINGSIZE 100 |
| 101 | |
| 102 | struct pending |
| 103 | { |
| 104 | struct pending *next; |
| 105 | int nsyms; |
| 106 | struct symbol *symbol[PENDINGSIZE]; |
| 107 | }; |
| 108 | |
| 109 | /* Here are the three lists that symbols are put on. */ |
| 110 | |
| 111 | /* static at top level, and types */ |
| 112 | |
| 113 | EXTERN struct pending *file_symbols; |
| 114 | |
| 115 | /* global functions and variables */ |
| 116 | |
| 117 | EXTERN struct pending *global_symbols; |
| 118 | |
| 119 | /* everything local to lexical context */ |
| 120 | |
| 121 | EXTERN struct pending *local_symbols; |
| 122 | |
| 123 | /* "using" directives local to lexical context. */ |
| 124 | |
| 125 | EXTERN struct using_direct *using_directives; |
| 126 | |
| 127 | /* Stack representing unclosed lexical contexts (that will become |
| 128 | blocks, eventually). */ |
| 129 | |
| 130 | struct context_stack |
| 131 | { |
| 132 | /* Outer locals at the time we entered */ |
| 133 | |
| 134 | struct pending *locals; |
| 135 | |
| 136 | /* Pending using directives at the time we entered. */ |
| 137 | |
| 138 | struct using_direct *using_directives; |
| 139 | |
| 140 | /* Pointer into blocklist as of entry */ |
| 141 | |
| 142 | struct pending_block *old_blocks; |
| 143 | |
| 144 | /* Name of function, if any, defining context */ |
| 145 | |
| 146 | struct symbol *name; |
| 147 | |
| 148 | /* PC where this context starts */ |
| 149 | |
| 150 | CORE_ADDR start_addr; |
| 151 | |
| 152 | /* Temp slot for exception handling. */ |
| 153 | |
| 154 | CORE_ADDR end_addr; |
| 155 | |
| 156 | /* For error-checking matching push/pop */ |
| 157 | |
| 158 | int depth; |
| 159 | |
| 160 | }; |
| 161 | |
| 162 | EXTERN struct context_stack *context_stack; |
| 163 | |
| 164 | /* Index of first unused entry in context stack. */ |
| 165 | |
| 166 | EXTERN int context_stack_depth; |
| 167 | |
| 168 | /* Currently allocated size of context stack. */ |
| 169 | |
| 170 | EXTERN int context_stack_size; |
| 171 | |
| 172 | /* Non-zero if the context stack is empty. */ |
| 173 | #define outermost_context_p() (context_stack_depth == 0) |
| 174 | |
| 175 | /* Nonzero if within a function (so symbols should be local, if |
| 176 | nothing says specifically). */ |
| 177 | |
| 178 | EXTERN int within_function; |
| 179 | |
| 180 | /* List of blocks already made (lexical contexts already closed). |
| 181 | This is used at the end to make the blockvector. */ |
| 182 | |
| 183 | struct pending_block |
| 184 | { |
| 185 | struct pending_block *next; |
| 186 | struct block *block; |
| 187 | }; |
| 188 | |
| 189 | /* Pointer to the head of a linked list of symbol blocks which have |
| 190 | already been finalized (lexical contexts already closed) and which |
| 191 | are just waiting to be built into a blockvector when finalizing the |
| 192 | associated symtab. */ |
| 193 | |
| 194 | EXTERN struct pending_block *pending_blocks; |
| 195 | \f |
| 196 | |
| 197 | struct subfile_stack |
| 198 | { |
| 199 | struct subfile_stack *next; |
| 200 | char *name; |
| 201 | }; |
| 202 | |
| 203 | EXTERN struct subfile_stack *subfile_stack; |
| 204 | |
| 205 | #define next_symbol_text(objfile) (*next_symbol_text_func)(objfile) |
| 206 | |
| 207 | /* Function to invoke get the next symbol. Return the symbol name. */ |
| 208 | |
| 209 | EXTERN char *(*next_symbol_text_func) (struct objfile *); |
| 210 | |
| 211 | /* Vector of types defined so far, indexed by their type numbers. |
| 212 | Used for both stabs and coff. (In newer sun systems, dbx uses a |
| 213 | pair of numbers in parens, as in "(SUBFILENUM,NUMWITHINSUBFILE)". |
| 214 | Then these numbers must be translated through the type_translations |
| 215 | hash table to get the index into the type vector.) */ |
| 216 | |
| 217 | EXTERN struct type **type_vector; |
| 218 | |
| 219 | /* Number of elements allocated for type_vector currently. */ |
| 220 | |
| 221 | EXTERN int type_vector_length; |
| 222 | |
| 223 | /* Initial size of type vector. Is realloc'd larger if needed, and |
| 224 | realloc'd down to the size actually used, when completed. */ |
| 225 | |
| 226 | #define INITIAL_TYPE_VECTOR_LENGTH 160 |
| 227 | |
| 228 | extern void add_symbol_to_list (struct symbol *symbol, |
| 229 | struct pending **listhead); |
| 230 | |
| 231 | extern struct symbol *find_symbol_in_list (struct pending *list, |
| 232 | char *name, int length); |
| 233 | |
| 234 | extern struct block *finish_block (struct symbol *symbol, |
| 235 | struct pending **listhead, |
| 236 | struct pending_block *old_blocks, |
| 237 | CORE_ADDR start, CORE_ADDR end, |
| 238 | struct objfile *objfile); |
| 239 | |
| 240 | extern void record_block_range (struct block *, |
| 241 | CORE_ADDR start, CORE_ADDR end_inclusive); |
| 242 | |
| 243 | extern void really_free_pendings (void *dummy); |
| 244 | |
| 245 | extern void start_subfile (const char *name, const char *dirname); |
| 246 | |
| 247 | extern void patch_subfile_names (struct subfile *subfile, char *name); |
| 248 | |
| 249 | extern void push_subfile (void); |
| 250 | |
| 251 | extern char *pop_subfile (void); |
| 252 | |
| 253 | extern struct block *end_symtab_get_static_block (CORE_ADDR end_addr, |
| 254 | struct objfile *objfile, |
| 255 | int expandable, |
| 256 | int required); |
| 257 | |
| 258 | extern struct symtab *end_symtab_from_static_block (struct block *static_block, |
| 259 | struct objfile *objfile, |
| 260 | int section, |
| 261 | int expandable); |
| 262 | |
| 263 | extern struct symtab *end_symtab (CORE_ADDR end_addr, |
| 264 | struct objfile *objfile, int section); |
| 265 | |
| 266 | extern struct symtab *end_expandable_symtab (CORE_ADDR end_addr, |
| 267 | struct objfile *objfile, |
| 268 | int section); |
| 269 | |
| 270 | extern void augment_type_symtab (struct objfile *objfile, |
| 271 | struct symtab *primary_symtab); |
| 272 | |
| 273 | /* Defined in stabsread.c. */ |
| 274 | |
| 275 | extern void scan_file_globals (struct objfile *objfile); |
| 276 | |
| 277 | extern void buildsym_new_init (void); |
| 278 | |
| 279 | extern void buildsym_init (void); |
| 280 | |
| 281 | extern struct context_stack *push_context (int desc, CORE_ADDR valu); |
| 282 | |
| 283 | extern struct context_stack *pop_context (void); |
| 284 | |
| 285 | extern void record_line (struct subfile *subfile, int line, CORE_ADDR pc); |
| 286 | |
| 287 | extern void start_symtab (char *name, char *dirname, CORE_ADDR start_addr); |
| 288 | |
| 289 | extern void restart_symtab (CORE_ADDR start_addr); |
| 290 | |
| 291 | extern int hashname (const char *name); |
| 292 | |
| 293 | extern void free_pending_blocks (void); |
| 294 | |
| 295 | /* Record the name of the debug format in the current pending symbol |
| 296 | table. FORMAT must be a string with a lifetime at least as long as |
| 297 | the symtab's objfile. */ |
| 298 | |
| 299 | extern void record_debugformat (const char *format); |
| 300 | |
| 301 | /* Record the name of the debuginfo producer (usually the compiler) in |
| 302 | the current pending symbol table. PRODUCER must be a string with a |
| 303 | lifetime at least as long as the symtab's objfile. */ |
| 304 | |
| 305 | extern void record_producer (const char *producer); |
| 306 | |
| 307 | extern void merge_symbol_lists (struct pending **srclist, |
| 308 | struct pending **targetlist); |
| 309 | |
| 310 | /* The macro table for the compilation unit whose symbols we're |
| 311 | currently reading. All the symtabs for this CU will point to |
| 312 | this. */ |
| 313 | EXTERN struct macro_table *pending_macros; |
| 314 | |
| 315 | #undef EXTERN |
| 316 | |
| 317 | #endif /* defined (BUILDSYM_H) */ |